<template>
  <Teleport to="body">
    <!-- 站点背景 -->
    <div v-if="backgroundType !== 'close'" :class="['background', backgroundType, themeValue]">
      <img
        v-if="backgroundType === 'image'"
        :src="backgroundUrl"
        id="background-cover"
        class="cover"
        alt="background"
        @error="coverError"
        @load="coverLoaded"
      />
    </div>
  </Teleport>
</template>

<script setup>
import { storeToRefs } from "pinia";
import { mainStore } from "@/store";

const store = mainStore();
const { backgroundType, backgroundUrl, themeValue } = storeToRefs(store);

console.log('backgroundType', backgroundType);
console.log('backgroundUrl', backgroundUrl);
console.log('themeValue', themeValue);

// 加载失败
const coverError = (e) => {
  // 替换为透明图片
  e.target.src =
    "data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' version='1.1' width='100%25' height='100%25'%3E%3C/svg%3E";
  $message.error("背景图片加载失败，请重新设置");
};

// 加载完成
const coverLoaded = (e) => {
  const imgElement = e.target;
  // 加载完成
  imgElement.classList.add("loaded");
};
</script>

<style lang="scss" scoped>
.background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: -2;
  &.patterns {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='192' height='192' viewBox='0 0 192 192'%3E%3Cpath fill='%23494849' fill-opacity='0.08' d='M192 15v2a11 11 0 0 0-11 11c0 1.94 1.16 4.75 2.53 6.11l2.36 2.36a6.93 6.93 0 0 1 1.22 7.56l-.43.84a8.08 8.08 0 0 1-6.66 4.13H145v35.02a6.1 6.1 0 0 0 3.03 4.87l.84.43c1.58.79 4 .4 5.24-.85l2.36-2.36a12.04 12.04 0 0 1 7.51-3.11 13 13 0 1 1 .02 26 12 12 0 0 1-7.53-3.11l-2.36-2.36a4.93 4.93 0 0 0-5.24-.85l-.84.43a6.1 6.1 0 0 0-3.03 4.87V143h35.02a8.08 8.08 0 0 1 6.66 4.13l.43.84a6.91 6.91 0 0 1-1.22 7.56l-2.36 2.36A10.06 10.06 0 0 0 181 164a11 11 0 0 0 11 11v2a13 13 0 0 1-13-13 12 12 0 0 1 3.11-7.53l2.36-2.36a4.93 4.93 0 0 0 .85-5.24l-.43-.84a6.1 6.1 0 0 0-4.87-3.03H145v35.02a8.08 8.08 0 0 1-4.13 6.66l-.84.43a6.91 6.91 0 0 1-7.56-1.22l-2.36-2.36A10.06 10.06 0 0 0 124 181a11 11 0 0 0-11 11h-2a13 13 0 0 1 13-13c2.47 0 5.79 1.37 7.53 3.11l2.36 2.36a4.94 4.94 0 0 0 5.24.85l.84-.43a6.1 6.1 0 0 0 3.03-4.87V145h-35.02a8.08 8.08 0 0 1-6.66-4.13l-.43-.84a6.91 6.91 0 0 1 1.22-7.56l2.36-2.36A10.06 10.06 0 0 0 107 124a11 11 0 0 0-22 0c0 1.94 1.16 4.75 2.53 6.11l2.36 2.36a6.93 6.93 0 0 1 1.22 7.56l-.43.84a8.08 8.08 0 0 1-6.66 4.13H49v35.02a6.1 6.1 0 0 0 3.03 4.87l.84.43c1.58.79 4 .4 5.24-.85l2.36-2.36a12.04 12.04 0 0 1 7.51-3.11A13 13 0 0 1 81 192h-2a11 11 0 0 0-11-11c-1.94 0-4.75 1.16-6.11 2.53l-2.36 2.36a6.93 6.93 0 0 1-7.56 1.22l-.84-.43a8.08 8.08 0 0 1-4.13-6.66V145H11.98a6.1 6.1 0 0 0-4.87 3.03l-.43.84c-.79 1.58-.4 4 .85 5.24l2.36 2.36a12.04 12.04 0 0 1 3.11 7.51A13 13 0 0 1 0 177v-2a11 11 0 0 0 11-11c0-1.94-1.16-4.75-2.53-6.11l-2.36-2.36a6.93 6.93 0 0 1-1.22-7.56l.43-.84a8.08 8.08 0 0 1 6.66-4.13H47v-35.02a6.1 6.1 0 0 0-3.03-4.87l-.84-.43c-1.59-.8-4-.4-5.24.85l-2.36 2.36A12 12 0 0 1 28 109a13 13 0 1 1 0-26c2.47 0 5.79 1.37 7.53 3.11l2.36 2.36a4.94 4.94 0 0 0 5.24.85l.84-.43A6.1 6.1 0 0 0 47 84.02V49H11.98a8.08 8.08 0 0 1-6.66-4.13l-.43-.84a6.91 6.91 0 0 1 1.22-7.56l2.36-2.36A10.06 10.06 0 0 0 11 28 11 11 0 0 0 0 17v-2a13 13 0 0 1 13 13c0 2.47-1.37 5.79-3.11 7.53l-2.36 2.36a4.94 4.94 0 0 0-.85 5.24l.43.84A6.1 6.1 0 0 0 11.98 47H47V11.98a8.08 8.08 0 0 1 4.13-6.66l.84-.43a6.91 6.91 0 0 1 7.56 1.22l2.36 2.36A10.06 10.06 0 0 0 68 11 11 11 0 0 0 79 0h2a13 13 0 0 1-13 13 12 12 0 0 1-7.53-3.11l-2.36-2.36a4.93 4.93 0 0 0-5.24-.85l-.84.43A6.1 6.1 0 0 0 49 11.98V47h35.02a8.08 8.08 0 0 1 6.66 4.13l.43.84a6.91 6.91 0 0 1-1.22 7.56l-2.36 2.36A10.06 10.06 0 0 0 85 68a11 11 0 0 0 22 0c0-1.94-1.16-4.75-2.53-6.11l-2.36-2.36a6.93 6.93 0 0 1-1.22-7.56l.43-.84a8.08 8.08 0 0 1 6.66-4.13H143V11.98a6.1 6.1 0 0 0-3.03-4.87l-.84-.43c-1.59-.8-4-.4-5.24.85l-2.36 2.36A12 12 0 0 1 124 13a13 13 0 0 1-13-13h2a11 11 0 0 0 11 11c1.94 0 4.75-1.16 6.11-2.53l2.36-2.36a6.93 6.93 0 0 1 7.56-1.22l.84.43a8.08 8.08 0 0 1 4.13 6.66V47h35.02a6.1 6.1 0 0 0 4.87-3.03l.43-.84c.8-1.59.4-4-.85-5.24l-2.36-2.36A12 12 0 0 1 179 28a13 13 0 0 1 13-13zM84.02 143a6.1 6.1 0 0 0 4.87-3.03l.43-.84c.8-1.59.4-4-.85-5.24l-2.36-2.36A12 12 0 0 1 83 124a13 13 0 1 1 26 0c0 2.47-1.37 5.79-3.11 7.53l-2.36 2.36a4.94 4.94 0 0 0-.85 5.24l.43.84a6.1 6.1 0 0 0 4.87 3.03H143v-35.02a8.08 8.08 0 0 1 4.13-6.66l.84-.43a6.91 6.91 0 0 1 7.56 1.22l2.36 2.36A10.06 10.06 0 0 0 164 107a11 11 0 0 0 0-22c-1.94 0-4.75 1.16-6.11 2.53l-2.36 2.36a6.93 6.93 0 0 1-7.56 1.22l-.84-.43a8.08 8.08 0 0 1-4.13-6.66V49h-35.02a6.1 6.1 0 0 0-4.87 3.03l-.43.84c-.79 1.58-.4 4 .85 5.24l2.36 2.36a12.04 12.04 0 0 1 3.11 7.51A13 13 0 1 1 83 68a12 12 0 0 1 3.11-7.53l2.36-2.36a4.93 4.93 0 0 0 .85-5.24l-.43-.84A6.1 6.1 0 0 0 84.02 49H49v35.02a8.08 8.08 0 0 1-4.13 6.66l-.84.43a6.91 6.91 0 0 1-7.56-1.22l-2.36-2.36A10.06 10.06 0 0 0 28 85a11 11 0 0 0 0 22c1.94 0 4.75-1.16 6.11-2.53l2.36-2.36a6.93 6.93 0 0 1 7.56-1.22l.84.43a8.08 8.08 0 0 1 4.13 6.66V143h35.02z'%3E%3C/path%3E%3C/svg%3E");
  }
  &.dark {
    &.patterns {
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='192' height='192' viewBox='0 0 192 192'%3E%3Cpath fill='%23fcfcfc' fill-opacity='0.08' d='M192 15v2a11 11 0 0 0-11 11c0 1.94 1.16 4.75 2.53 6.11l2.36 2.36a6.93 6.93 0 0 1 1.22 7.56l-.43.84a8.08 8.08 0 0 1-6.66 4.13H145v35.02a6.1 6.1 0 0 0 3.03 4.87l.84.43c1.58.79 4 .4 5.24-.85l2.36-2.36a12.04 12.04 0 0 1 7.51-3.11 13 13 0 1 1 .02 26 12 12 0 0 1-7.53-3.11l-2.36-2.36a4.93 4.93 0 0 0-5.24-.85l-.84.43a6.1 6.1 0 0 0-3.03 4.87V143h35.02a8.08 8.08 0 0 1 6.66 4.13l.43.84a6.91 6.91 0 0 1-1.22 7.56l-2.36 2.36A10.06 10.06 0 0 0 181 164a11 11 0 0 0 11 11v2a13 13 0 0 1-13-13 12 12 0 0 1 3.11-7.53l2.36-2.36a4.93 4.93 0 0 0 .85-5.24l-.43-.84a6.1 6.1 0 0 0-4.87-3.03H145v35.02a8.08 8.08 0 0 1-4.13 6.66l-.84.43a6.91 6.91 0 0 1-7.56-1.22l-2.36-2.36A10.06 10.06 0 0 0 124 181a11 11 0 0 0-11 11h-2a13 13 0 0 1 13-13c2.47 0 5.79 1.37 7.53 3.11l2.36 2.36a4.94 4.94 0 0 0 5.24.85l.84-.43a6.1 6.1 0 0 0 3.03-4.87V145h-35.02a8.08 8.08 0 0 1-6.66-4.13l-.43-.84a6.91 6.91 0 0 1 1.22-7.56l2.36-2.36A10.06 10.06 0 0 0 107 124a11 11 0 0 0-22 0c0 1.94 1.16 4.75 2.53 6.11l2.36 2.36a6.93 6.93 0 0 1 1.22 7.56l-.43.84a8.08 8.08 0 0 1-6.66 4.13H49v35.02a6.1 6.1 0 0 0 3.03 4.87l.84.43c1.58.79 4 .4 5.24-.85l2.36-2.36a12.04 12.04 0 0 1 7.51-3.11A13 13 0 0 1 81 192h-2a11 11 0 0 0-11-11c-1.94 0-4.75 1.16-6.11 2.53l-2.36 2.36a6.93 6.93 0 0 1-7.56 1.22l-.84-.43a8.08 8.08 0 0 1-4.13-6.66V145H11.98a6.1 6.1 0 0 0-4.87 3.03l-.43.84c-.79 1.58-.4 4 .85 5.24l2.36 2.36a12.04 12.04 0 0 1 3.11 7.51A13 13 0 0 1 0 177v-2a11 11 0 0 0 11-11c0-1.94-1.16-4.75-2.53-6.11l-2.36-2.36a6.93 6.93 0 0 1-1.22-7.56l.43-.84a8.08 8.08 0 0 1 6.66-4.13H47v-35.02a6.1 6.1 0 0 0-3.03-4.87l-.84-.43c-1.59-.8-4-.4-5.24.85l-2.36 2.36A12 12 0 0 1 28 109a13 13 0 1 1 0-26c2.47 0 5.79 1.37 7.53 3.11l2.36 2.36a4.94 4.94 0 0 0 5.24.85l.84-.43A6.1 6.1 0 0 0 47 84.02V49H11.98a8.08 8.08 0 0 1-6.66-4.13l-.43-.84a6.91 6.91 0 0 1 1.22-7.56l2.36-2.36A10.06 10.06 0 0 0 11 28 11 11 0 0 0 0 17v-2a13 13 0 0 1 13 13c0 2.47-1.37 5.79-3.11 7.53l-2.36 2.36a4.94 4.94 0 0 0-.85 5.24l.43.84A6.1 6.1 0 0 0 11.98 47H47V11.98a8.08 8.08 0 0 1 4.13-6.66l.84-.43a6.91 6.91 0 0 1 7.56 1.22l2.36 2.36A10.06 10.06 0 0 0 68 11 11 11 0 0 0 79 0h2a13 13 0 0 1-13 13 12 12 0 0 1-7.53-3.11l-2.36-2.36a4.93 4.93 0 0 0-5.24-.85l-.84.43A6.1 6.1 0 0 0 49 11.98V47h35.02a8.08 8.08 0 0 1 6.66 4.13l.43.84a6.91 6.91 0 0 1-1.22 7.56l-2.36 2.36A10.06 10.06 0 0 0 85 68a11 11 0 0 0 22 0c0-1.94-1.16-4.75-2.53-6.11l-2.36-2.36a6.93 6.93 0 0 1-1.22-7.56l.43-.84a8.08 8.08 0 0 1 6.66-4.13H143V11.98a6.1 6.1 0 0 0-3.03-4.87l-.84-.43c-1.59-.8-4-.4-5.24.85l-2.36 2.36A12 12 0 0 1 124 13a13 13 0 0 1-13-13h2a11 11 0 0 0 11 11c1.94 0 4.75-1.16 6.11-2.53l2.36-2.36a6.93 6.93 0 0 1 7.56-1.22l.84.43a8.08 8.08 0 0 1 4.13 6.66V47h35.02a6.1 6.1 0 0 0 4.87-3.03l.43-.84c.8-1.59.4-4-.85-5.24l-2.36-2.36A12 12 0 0 1 179 28a13 13 0 0 1 13-13zM84.02 143a6.1 6.1 0 0 0 4.87-3.03l.43-.84c.8-1.59.4-4-.85-5.24l-2.36-2.36A12 12 0 0 1 83 124a13 13 0 1 1 26 0c0 2.47-1.37 5.79-3.11 7.53l-2.36 2.36a4.94 4.94 0 0 0-.85 5.24l.43.84a6.1 6.1 0 0 0 4.87 3.03H143v-35.02a8.08 8.08 0 0 1 4.13-6.66l.84-.43a6.91 6.91 0 0 1 7.56 1.22l2.36 2.36A10.06 10.06 0 0 0 164 107a11 11 0 0 0 0-22c-1.94 0-4.75 1.16-6.11 2.53l-2.36 2.36a6.93 6.93 0 0 1-7.56 1.22l-.84-.43a8.08 8.08 0 0 1-4.13-6.66V49h-35.02a6.1 6.1 0 0 0-4.87 3.03l-.43.84c-.79 1.58-.4 4 .85 5.24l2.36 2.36a12.04 12.04 0 0 1 3.11 7.51A13 13 0 1 1 83 68a12 12 0 0 1 3.11-7.53l2.36-2.36a4.93 4.93 0 0 0 .85-5.24l-.43-.84A6.1 6.1 0 0 0 84.02 49H49v35.02a8.08 8.08 0 0 1-4.13 6.66l-.84.43a6.91 6.91 0 0 1-7.56-1.22l-2.36-2.36A10.06 10.06 0 0 0 28 85a11 11 0 0 0 0 22c1.94 0 4.75-1.16 6.11-2.53l2.36-2.36a6.93 6.93 0 0 1 7.56-1.22l.84.43a8.08 8.08 0 0 1 4.13 6.66V143h35.02z'%3E%3C/path%3E%3C/svg%3E");
    }
    .cover {
      filter: brightness(0.6);
    }
  }
  .cover {
    width: auto;
    height: auto;
    min-height: 100%;
    opacity: 0;
    transition:
      filter 0.3s,
      opacity 0.3s;
    &.loaded {
      opacity: 1;
    }
  }
}
</style>
